private void AddField(Content content, Property expansion, ODataEntity fields,
string fieldName, HttpContext httpContext, Func <Content, HttpContext, object> getFieldValue)
{
fields.Add(fieldName,
expansion == null
? ODataReference.Create(string.Concat(GetSelfUrl(content), "/", fieldName))
: getFieldValue?.Invoke(content, httpContext));
}
protected virtual object GetJsonObject(Field field, string selfUrl, ODataRequest oDataRequest)
{
object data;
if (field is ReferenceField)
{
return(ODataReference.Create(String.Concat(selfUrl, "/", field.Name)));
}
else if (field is BinaryField binaryField)
{
try
{
// load binary fields only if the content is finalized
var binaryData = field.Content.ContentHandler.SavingState == ContentSavingState.Finalized
? (BinaryData)binaryField.GetData()
: null;
return(ODataBinary.Create(BinaryField.GetBinaryUrl(binaryField.Content.Id, binaryField.Name, binaryData?.Timestamp ?? default),
null, binaryData?.ContentType, null));
}
catch (Exception ex)
{
SnTrace.System.WriteError(
$"Error accessing field {field.Name} of {field.Content.Path} with user {User.Current.Username}: " +
ex.Message);
return(null);
}
}
else if (ODataMiddleware.DeferredFieldNames.Contains(field.Name))
{
return(ODataReference.Create(String.Concat(selfUrl, "/", field.Name)));
}
try
{
data = field.GetData();
}
catch (SenseNetSecurityException)
{
// The user does not have access to this field (e.g. cannot load
// a referenced content). In this case we serve a null value.
data = null;
SnTrace.Repository.Write("PERMISSION warning: user {0} does not have access to field '{1}' of {2}.", User.LoggedInUser.Username, field.Name, field.Content.Path);
}
if (data is NodeType nodeType)
{
return(nodeType.Name);
}
if (data is RichTextFieldValue rtfValue)
{
return(GetRichTextOutput(field.Name, rtfValue, oDataRequest));
}
return(data);
}
private void AddField(Content content, List <Property> expandTree, IDictionary <string, object> fields,
string fieldName, HttpContext httpContext, Func <Content, HttpContext, object> getFieldValue)
{
var expansion = GetExpansion(fieldName, expandTree);
fields.Add(fieldName,
expansion == null
? ODataReference.Create(string.Concat(GetSelfUrl(content), "/", fieldName))
: getFieldValue?.Invoke(content, httpContext));
}
internal override ODataEntity Project(Content content, HttpContext httpContext)
{
var fields = new ODataEntity();
var selfurl = GetSelfUrl(content);
if (Request.EntityMetadata != MetadataFormat.None)
{
fields.Add("__metadata", GetMetadata(content, selfurl, Request.EntityMetadata, httpContext));
}
IEnumerable <string> fieldNames;
if (Request.HasSelect)
{
fieldNames = Request.Select;
}
else
{
if (IsCollectionItem)
{
if (_fieldNamesForPaths.ContainsKey(content.ContentHandler.ParentPath))
{
fieldNames = _fieldNamesForPaths[content.ContentHandler.ParentPath];
}
else
{
_fieldNamesForPaths[content.ContentHandler.ParentPath] = fieldNames = content.GetFieldNamesInParentTable();
}
if (content.AspectFields != null && content.AspectFields.Count > 0)
{
fieldNames = fieldNames.Concat(content.AspectFields.Keys);
}
}
else
{
fieldNames = content.Fields.Keys;
}
}
if (Request.HasSelect)
{
foreach (var selectItem in Request.Select)
{
if (selectItem.Contains("/"))
{
throw new ODataException("Bad item in $select: " + selectItem, ODataExceptionCode.InvalidSelectParameter);
}
}
}
if (!Request.HasSelect)
{
fieldNames = fieldNames.Concat(new[] { ACTIONSPROPERTY, ISFILEPROPERTY, ODataMiddleware.ChildrenPropertyName });
}
foreach (var fieldName in fieldNames)
{
if (fields.ContainsKey(fieldName))
{
continue;
}
if (ODataMiddleware.DisabledFieldNames.Contains(fieldName))
{
fields.Add(fieldName, null);
continue;
}
if (IsAllowedField(content, fieldName))
{
if (content.Fields.TryGetValue(fieldName, out var field))
{
fields.Add(fieldName, ODataWriter.GetJsonObject(field, selfurl));
}
else if (fieldName == ACTIONSPROPERTY)
{
fields.Add(ACTIONSPROPERTY, ODataReference.Create(String.Concat(selfurl, "/", ODataMiddleware.ActionsPropertyName)));
}
else if (fieldName == ISFILEPROPERTY)
{
fields.Add(ISFILEPROPERTY, content.Fields.ContainsKey(ODataMiddleware.BinaryPropertyName));
}
else if (fieldName == ICONPROPERTY)
{
fields.Add(fieldName, content.Icon ?? content.ContentType.Icon);
}
else if (fieldName == ODataMiddleware.ChildrenPropertyName)
{
fields.Add(fieldName, ODataReference.Create(string.Concat(selfurl, "/", ODataMiddleware.ChildrenPropertyName)));
}
else
{
fields.Add(fieldName, null);
}
}
else
{
fields.Add(fieldName, null);
}
}
return(fields);
}
